Tunability of Carbon NanoTubes Resistance Deposited by Inkjet Printing at Low Temperature
- PDF / 947,567 Bytes
- 6 Pages / 612 x 792 pts (letter) Page_size
- 36 Downloads / 181 Views
1258-R10-15
Tunability of Carbon NanoTubes Resistance Deposited by Inkjet Printing at Low Temperature Sébastien Pacchini1,2, V. Conedera1,2, F. Mesnilgrente1,2, N. Fabre1,2, E. Flahaut3,4, F. Coccetti1,2, M. Dragoman5, R. Plana1,2 1
CNRS ; LAAS ; 7 avenue du colonel Roche, F-31077 Toulouse, France
2
Université de Toulouse ; UPS, INSA, INP, ISAE ; LAAS ; F-31077 Toulouse, France
3
Université de Toulouse ; UPS, INP ; Institut Carnot Cirimat ; 118, route de Narbonne, F-31062 Toulouse cedex 9, France 4
CNRS ; Institut Carnot Cirimat ; F-31062 Toulouse, France
5
Univ. Bucharest, Physics Dept., P.O. Box MG-11, 077125 Bucharest, Romania
ABSTRACT A deposition method based on inkjet printing technology and conductive double-wall carbon nanotubes (DWNT) suspension is, hereby, presented. The approach exploits the selective transfer capabilities offered by the inkjet printing process and the excellent conductive characteristics of the available DWNTs, in order to realize microelectronic interconnects of arbitrary patter and given electrical properties. The DWNTs are prepared by CCVD process, oxidized and dispersed in ethylene-glycol (EG) and in water solution. The DWNTs lines are fabricated on tests structures and then characterized through impedance and current-voltage measurements. 400 µm long and 90 µm wide transmission lines have been printed by varying the number of overwrites for given DWNT density. The results confirm that the DC resistance of DWNTs lines can be changed according to the number of overwrites and that the lines preserve ohmic characteristics up to 100 MHz. INTRODUCTION Inkjet printing technology is experiencing an increasingly central role in large consumer electronics manufacturing as selective transfer process. Recently, its use has been broadened to prototyping of circuits in microwave range. Current and future electronics systems, and in particular, that in Radio Frequency (RF) range, demand multiple functionalities while guaranteeing miniaturization, reliability and temperature stability. With the emergence of nano-particles and nano-objects, new classes of tunable materials have entered the R&D manufacturing landscape. The use of materials based on Carbon NanoTubes (CNT) appears to be very promising for nanotechnologies. CNTs have shown exceptional stiffness, and remarkable thermal and electrical properties [1]. These advantages make them ideal candidates for the development of multifunctional systems. Numerous applications are envisioned for CNTs, notably, as part of a new range of nanocomposite materials with improved physical properties [2]. Recently, CNTs have been suggested in microwave applications for alleviating the problem of electrical charging in dielectric used for electrostatic actuation of RF-MEMS [3] and in composite doped polymers for producing (achieving) broadband microwave absorbing materials [4].
This paper describes the development carried out to obtain thin film layers endowed with tunable electrical properties by means of inkjet printing and DWNTs based inks. The pr
Data Loading...
